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We examine the observational consequences of partial gaps being opened by planets in protoplanetary disks. We model the disk using a static alpha-disk model with detailed radiative transfer, parametrizing the shape and size of the partially…

地球与行星天体物理 · 物理学 2015-06-04 Hannah Jang-Condell , Neal J. Turner

The thermal structure of protoplanetary disks is a fundamental characteristic of the system that has wide reaching effects on disk evolution and planet formation. In this study, we constrain the 2D thermal structure of the protoplanetary…

The formation of planets occurs within protoplanetary disks surrounding young stars, resulting in perturbation of the gas and dust surface densities. Here, we report the first evidence of spatially resolved gas surface density…

地球与行星天体物理 · 物理学 2020-06-24 Cécile Favre , Davide Fedele , Luke Maud , Richard Booth , Marco Tazzari , Anna Miotello , Leonardo Testi , Dmitry Semenov , Simon Bruderer

The evolution of the gas mass of planet-forming disks around young stars is crucial for our understanding of planet formation, yet it has proven hard to constrain observationally, due both to the difficulties of measuring gas masses and the…

In the disk-mediated accretion scenario for the formation of the most massive stars, gravitational instabilities in the disk can force it to fragment. We investigate the effects of inclination and spatial resolution on observable kinematics…

星系天体物理 · 物理学 2019-11-27 Aida Ahmadi , Rolf Kuiper , Henrik Beuther

Context. The dynamics of a low-mass protoplanet accreting solids is influenced by the heating torque, which was found to suppress inward migration in protoplanetary disks with constant opacities. Aims. We investigate the differences of the…

地球与行星天体物理 · 物理学 2019-06-26 Ondřej Chrenko , Michiel Lambrechts

Gravitational instability is one of considerable mechanisms to explain the formation of giant planets. We study the gravitational stability for the protoplanetary disks around a protostar. The temperature and Toomre's Q-value are calculated…

地球与行星天体物理 · 物理学 2019-03-18 Shigeo S. Kimura , Toru Tsuribe

The formation of planets strongly depends on the total amount as well as on the spatial distribution of solids in protoplanetary disks. Thanks to the improvements in resolution and sensitivity provided by ALMA, measurements of the surface…

High-resolution imaging of protoplanetary disks has unveiled a rich diversity of spiral structure, some of which may arise from disk-planet interaction. Using 3D hydrodynamics with $\beta$-cooling to a vertically-stratified background, as…

地球与行星天体物理 · 物理学 2021-09-08 Dhruv Muley , Ruobing Dong , Jeffrey Fung

Ionization drives important chemical and dynamical processes within protoplanetary disks, including the formation of organics and water in the cold midplane and the transportation of material via accretion and magneto-hydrodynamic (MHD)…

We report on the results of the first 3D SPH simulation of massive, gravitationally unstable protoplanetary disks with radiative transfer. We adopt a flux-limited diffusion scheme justified by the high opacity of most of the disk. The…

天体物理学 · 物理学 2009-11-11 Lucio Mayer , Graeme Lufkin , Thomas Quinn , James Wadsley

Environmental effects, such as stellar fly-bys and external irradiation, are thought to affect the evolution of protoplanetary disks in clustered star formation. Previous ALMA images at 225 GHz of the ISO-Oph 2 binary revealed a peculiar…

As the earliest stage of planet formation, massive, optically thick, and gas rich protoplanetary disks provide key insights into the physics of star and planet formation. When viewed edge-on, high resolution images offer a unique…

太阳与恒星天体物理 · 物理学 2021-05-05 S. Wolff , G. Duchêne , K. Stapelfeldt , F. Ménard , C. Flores , D. Padgett , C. Pinte , M. Villenave , G. van der Plas , M. Perrin

Planetary systems are thought to be born in protoplanetary disks. Isotope ratios are a powerful tool for investigating the material origin and evolution from molecular clouds to planetary systems via protoplanetary disks. However, it is…

地球与行星天体物理 · 物理学 2022-07-06 Tomohiro C. Yoshida , Hideko Nomura , Kenji Furuya , Takashi Tsukagoshi , Seokho Lee

[abridged] ALMA observations of dust in protoplanetary disks are revealing the existence of sub-structures such as rings, gaps and cavities. Such morphology are expected to be the outcome of dynamical interaction between the disk and…

地球与行星天体物理 · 物理学 2023-04-19 D. Fedele , F. Bollati , G. Lodato

Protoplanetary disks with large inner dust cavities are thought to host massive planetary or substellar companions. These disks show asymmetries and rings in the millimeter continuum, caused by dust trapping in pressure bumps, and…

The formation of a circumplanetary disk and accretion of angular momentum onto a protoplanetary system are investigated using 3D hydrodynamical simulations. The local region around a protoplanet in a protoplanetary disk is considered with…

天体物理学 · 物理学 2008-10-16 Masahiro N. Machida

Turbulence can transport angular momentum in protoplanetary disks and influence the growth and evolution of planets. With spatially and spectrally resolved molecular emission line measurements provided by (sub)millimeter interferometric…

The gas near the midplanes of planet-forming protostellar disks remains largely unprobed by observations due to the high optical depth of commonly observed molecules such as CO and H$_2$O. However, rotational emission lines from rare…

地球与行星天体物理 · 物理学 2016-05-25 Mo Yu , Karen Willacy , Sarah E. Dodson-Robinson , Neal J. Turner , Neal J. Evans

How substructures and disk properties affect dust evolution and the delivery of solids and volatiles into planet-forming regions remains an open question. We present results from tailored dust evolution modeling of the AGE-PRO ALMA large…